Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shih, WT | en_US |
dc.contributor.author | Huang, JY | en_US |
dc.date.accessioned | 2014-12-08T15:41:53Z | - |
dc.date.available | 2014-12-08T15:41:53Z | - |
dc.date.issued | 2002-10-01 | en_US |
dc.identifier.issn | 0267-8292 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/28482 | - |
dc.description.abstract | A twisted nematic pi-cell has been studied by optical transmission measurement, polarized Fourier-transform infrared (pFTIR) absorption spectroscopy, and Raman spectroscopy. Our pFTIR results suggest that the LC molecules undergo a restricted rotation about the molecular long axis. The rise and decay times of the optical response were found to be 6 ms and 1.6 ms, respectively. The switching dynamics of the twisted pi-cell was also studied using time-resolved Raman spectroscopy. A normal mode associated with the C-H out-of-plane wag on the LC core was found to be enhanced after the electric field was switched off. Our data show that LC molecules in the twisted pi-cell do not rotate like a rigid molecule during the field-induced reorientation process. The methods employed in this study have yielded valuable information about LC alignment and field-induced reorientation with respect to functional group specificity. | en_US |
dc.language.iso | en_US | en_US |
dc.title | Molecular alignment and field-induced reorientation in a twisted nematic liquid crystal pi-cell | en_US |
dc.type | Article | en_US |
dc.identifier.journal | LIQUID CRYSTALS | en_US |
dc.citation.volume | 29 | en_US |
dc.citation.issue | 10 | en_US |
dc.citation.spage | 1283 | en_US |
dc.citation.epage | 1290 | en_US |
dc.contributor.department | 光電工程學系 | zh_TW |
dc.contributor.department | Department of Photonics | en_US |
dc.identifier.wosnumber | WOS:000179038000006 | - |
dc.citation.woscount | 2 | - |
Appears in Collections: | Articles |
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